燃油附件耐火试验温度场数值模拟与验证
|
摘要
为了准确预测耐火试验过程中航空发动机燃油附件的热场分布,提出了1种等效火焰建模方法建立相应的流固耦合传热模型,并对着火条件下试验件的工作特性进行数值模拟,分析了流动传热的机理,得到3维计算域的稳态温度场分布。对该试验件开展着火验证试验,监测了局部温度参数。仿真与试验结果的对比分析表明:仿真所得热场结构分布合理,局部温度值与试验结果吻合较好,该方法能准确地模拟火焰与试验件间的传热特性,可为航空发动机燃油附件的耐火设计提供参考。
In order to accurately predict the thermal field distribution of aeroengine fuel accessory during fire resistant test,an equivalent flame modeling method was proposed to establish the corresponding fluid-solid coupled heat transfer model. Numerical simulation of the test article working characteristics under ignition condition was carried out. The mechanism of flow heat transfer was analyzed,and the steady-state temperature field distribution of three-dimensional computational domain was obtained. The fire verification test was carried out on the test article,and the local temperature parameters were monitored. The comparison and analysis of simulation and test results show that the structure distribution of the thermal field is reasonable,and the local temperature values are in good agreement with the experimental results. This method can accurately simulate the heat transfer characteristics between the flame and the test article,and can provide a reference for the fire resistant design of the aeroengine fuel accessory.
In order to accurately predict the thermal field distribution of aeroengine fuel accessory during fire resistant test,an equivalent flame modeling method was proposed to establish the corresponding fluid-solid coupled heat transfer model. Numerical simulation of the test article working characteristics under ignition condition was carried out. The mechanism of flow heat transfer was analyzed,and the steady-state temperature field distribution of three-dimensional computational domain was obtained. The fire verification test was carried out on the test article,and the local temperature parameters were monitored. The comparison and analysis of simulation and test results show that the structure distribution of the thermal field is reasonable,and the local temperature values are in good agreement with the experimental results. This method can accurately simulate the heat transfer characteristics between the flame and the test article,and can provide a reference for the fire resistant design of the aeroengine fuel accessory.
引文
[1]赵冬梅,徐青,凌长明.梯形通道内扰流柱不同排列方式的流动和换热的数值研究[J].航空发动机,2006,32(4):23-25.ZHAO Dongmei,XU Qing,LING Changming. Numerical simulation on flow and heat transfer in trapezoidal passage with different pin-fin arrays[J]. Aeroengine,2006,32(4):23-25.(in Chinese)
[2]唐梓杰.小型航空二冲程风冷发动机缸体流固耦合传热的仿真[J].航空动力学报,2011,26(1):42-47.TANG Zijie. Simulation of fluid-solid coupled heat transfer of cylinder of a small two-stroke air-cooled aeroengine[J].Journal of Aerospace Power,2011,26(1):42-47.(in Chinese)
[3]文超柱,董威.舰载燃气轮机间冷器传热与流动的数值模拟[J].航空动力学报,2010,25(3):654-658.WEN Chaozhu,DONG Wei. Numerical simulation of heat transfer and fluid flow on marine gas turbine intercooler[J].Journal of Aerospace Power,2010,25(3):654-658.(in Chinese)
[4]刘红梅.多斜孔壁的非均匀孔排布优化设计及传热特性数值分析[J].航空发动机,2013,39(1):56-60.LIU Hongmei. Optimization design of nonuniform holes distribution and numerical analysis of heat transfer characteristics for effusion plate[J].Aeroengine,2013,39(1):56-60.(in Chinese)
[5] Kao Y H. Experimental investigation of nexgen and gas burner for FAA fire test[D]. America:University of Cincinnati,2012.
[6] Robert I O. Design and analysis of the federal aviation administration next generation fire test[D]. America:The State University of New Jersey,2013.
[7] Agrawal G K, Chakraborty S, Som S K. Heat transfer characteristics of premixed flame impinging upwards to plane surfaces inclined with the flame jet axis[J]. International Journal of Heat&Mass Transfer, 2010,53(9):1899-1907.
[8]曾文.一种航空煤油数值模拟替代燃料的化学反应简化机理[J].航空动力学报,2012,27(3):536-543.ZENG Wen. Reduced chemical reaction mechanism of a surrogate fuel for kerosene[J]. Journal of Aerospace Power,2012,27(3):536-543.(in Chinese)
[9] Gueret C,Cathonnet M,Boettner J C,et al.Experimental study and modeling of kerosene oxidation in a jetstirred flow reactor[J].Proceedings of the Combustion Institute,1990,23(1):211-216.
[10] Dagaut P,Reuillon M,Boettner J C,et al. Kerosene combustion at pressure up to 40 atm:experimental study and detailed chemical kinetic modeling[J]. Proceedings of the Combustion Institute,1994,25(1):919-926.
[11] Patterson P M,Kyne A G,Pourkhashanian M,et al. Combustion of kerosene in counter-flow diffusion flames[J].Journal of Propulsion and Power,2000,16(2):453-460.
[12] Dagaut P. On the kinetics of hydrocarbons oxidation from natural gas to kerosene and diesel fuel[J].Physical Chemistry Physics,2002,4(1):2079-2094.
[13] Montgomery C J,Cannon S M,Mawid M A,et al. Reduced chemical kinetic mechanisms for JP-8 combustion[R].AIAA-2002-0336.
[14] Cooke J A. Computational and experimental study of JP-8,a surrogate,and its components in counter-flow diffusion flames[J]. Proceedings of the Combustion Institute,2005,30(1):439-446.
[15]刘帅.航空发动机防火实验的热流分布仿真研究[D].天津:中国民航大学,2016.LIU Shuai. Simulation research on heat flux distribution of aero-engine fire protection test[D].Tianjin:Civil Aviation University of China,2016.(in Chinese)
[2]唐梓杰.小型航空二冲程风冷发动机缸体流固耦合传热的仿真[J].航空动力学报,2011,26(1):42-47.TANG Zijie. Simulation of fluid-solid coupled heat transfer of cylinder of a small two-stroke air-cooled aeroengine[J].Journal of Aerospace Power,2011,26(1):42-47.(in Chinese)
[3]文超柱,董威.舰载燃气轮机间冷器传热与流动的数值模拟[J].航空动力学报,2010,25(3):654-658.WEN Chaozhu,DONG Wei. Numerical simulation of heat transfer and fluid flow on marine gas turbine intercooler[J].Journal of Aerospace Power,2010,25(3):654-658.(in Chinese)
[4]刘红梅.多斜孔壁的非均匀孔排布优化设计及传热特性数值分析[J].航空发动机,2013,39(1):56-60.LIU Hongmei. Optimization design of nonuniform holes distribution and numerical analysis of heat transfer characteristics for effusion plate[J].Aeroengine,2013,39(1):56-60.(in Chinese)
[5] Kao Y H. Experimental investigation of nexgen and gas burner for FAA fire test[D]. America:University of Cincinnati,2012.
[6] Robert I O. Design and analysis of the federal aviation administration next generation fire test[D]. America:The State University of New Jersey,2013.
[7] Agrawal G K, Chakraborty S, Som S K. Heat transfer characteristics of premixed flame impinging upwards to plane surfaces inclined with the flame jet axis[J]. International Journal of Heat&Mass Transfer, 2010,53(9):1899-1907.
[8]曾文.一种航空煤油数值模拟替代燃料的化学反应简化机理[J].航空动力学报,2012,27(3):536-543.ZENG Wen. Reduced chemical reaction mechanism of a surrogate fuel for kerosene[J]. Journal of Aerospace Power,2012,27(3):536-543.(in Chinese)
[9] Gueret C,Cathonnet M,Boettner J C,et al.Experimental study and modeling of kerosene oxidation in a jetstirred flow reactor[J].Proceedings of the Combustion Institute,1990,23(1):211-216.
[10] Dagaut P,Reuillon M,Boettner J C,et al. Kerosene combustion at pressure up to 40 atm:experimental study and detailed chemical kinetic modeling[J]. Proceedings of the Combustion Institute,1994,25(1):919-926.
[11] Patterson P M,Kyne A G,Pourkhashanian M,et al. Combustion of kerosene in counter-flow diffusion flames[J].Journal of Propulsion and Power,2000,16(2):453-460.
[12] Dagaut P. On the kinetics of hydrocarbons oxidation from natural gas to kerosene and diesel fuel[J].Physical Chemistry Physics,2002,4(1):2079-2094.
[13] Montgomery C J,Cannon S M,Mawid M A,et al. Reduced chemical kinetic mechanisms for JP-8 combustion[R].AIAA-2002-0336.
[14] Cooke J A. Computational and experimental study of JP-8,a surrogate,and its components in counter-flow diffusion flames[J]. Proceedings of the Combustion Institute,2005,30(1):439-446.
[15]刘帅.航空发动机防火实验的热流分布仿真研究[D].天津:中国民航大学,2016.LIU Shuai. Simulation research on heat flux distribution of aero-engine fire protection test[D].Tianjin:Civil Aviation University of China,2016.(in Chinese)